+ Handle case in which FileManager calls return null (e.g. no network
connection exists) such that offline unit tests don't crash
~ Improved move unit-test (inspection of internal data structures on
directory and file move events)
+ Added first Move-integration tests
! many file moves don't work, TomP2P exception!
~ Moved some stuff from AddDelete.java to super class (for reuse)
+ Integration of move with H2H
~ Bug fixes: if subtrees are moved, the path update to the children was
erroneous, now correct
~ Several small bugs resolved